Just use default plane mesh for mesh Instance and this plane you can see from one side and from another you cannot , but nice idea , I got almost the same idea for one of my future games.. I liked to play yours game
Very interesting idea, which could be perfected, but of course , there is not enought time on 7Day game jam to create perfect game... The biggest problem I had was that when i was next to room walls, I couldnt see nothing, next time , create just one plan just with normals heading to the room, not outside, so when you are looking from outside, the wall wouldnt be rendered
